The Aboriginal Population of the San Joaquin Valley, California

by Sherburne Friend Cook

The remaining portion of the Yokuts-Miwok territory lay in the valley and foothills north of the Merced River. This area (see maps [1] and [5], areas 8-13 inclusive), particularly the delta of the San Joaquin and Sacramento rivers, was entered relatively early by the Spaniards and by the year 1820 had been almost completely swept of its native population. The names of many whole tribes have been lost and the exact locations of many others are now almost impossible to ascertain. Of village names only those few are known to us which were preserved, often by chance, in the mission records and accounts of expeditions. Several attempts have been made to reconstruct the aboriginal human geography but none has been entirely successful. Kroeber's account, which accompanies his discussion of the Plains Miwok and northern Yokuts in the Handbook of California Indians, is manifestly incomplete. Merriam's paper on the Mewan Stock of California (1907) is helpful, but probably the best work of the modern investigators is that of Schenck (1926). The early nineteenth-century accounts for this region are also less satisfactory than for the central and southern parts of the San Joaquin Valley. Moraga's record is useful only for the Tuolumne River, and the delta is covered only by Abella and Duran. It is true that both Sutter and Gatten give figures for villages south of Sacramento but their information pertains only to the badly depleted natives of the 'forties. Hence their censuses are of little value for assessing the aboriginal condition.

One source not available for other areas is the mission records. The converts from the delta and lower San Joaquin Valley were brought almost exclusively into the San Francisco, San Jose, and Santa Clara missions. The baptism books of these missions have been preserved, and two copies have been made. The first, of the San Francisco Mission, was made by A. Pinart in 1878 and is at present in the Bancroft Library in Berkeley. The other records, copied by S. R. Clemence in 1919, include the records of all three missions and are now to be found, in typed form, among the manuscripts in the file of C. H. Merriam. The baptism books set forth the name and village of origin of every native in the mission, as well as the date of baptism. Newly converted gentiles are readily distinguished from infants born in the mission itself, since the origin of the latter is ascribed to the mission and not to a village. In addition to the names of villages, not all of which can be located with certainty, the dates of baptism constitute almost conclusive evidence. If the baptisms from San Francisco and Santa Clara are tabulated by village and date, it is very clear that the villages of local tribes were cleaned out before the year 1805. At this point an entirely new set of names appears, most of which are undoubtedly in the Tulares. Hence, if the name of a village does not correspond to any now known to ethnographers and no baptisms are reported from it prior to 1805, the conclusion is warranted that the village was actually situated in the central valley. The same assumption may be made with somewhat less certainty concerning the San Jose records. This mission was founded in 1797 and its earliest converts were drawn from the Costanoan tribes on the east shore of San Francisco Bay. The reduction of this region may not have been complete by 1805 and Tulare Indians were coming in by that year. Hence there is a chance of overlap. This source of error, however, may be excluded for all practical purposes if no doubtful village which continued to furnish converts after 1810 is included in the list, for the reduction of the Costanoans was certainly complete by that time.

Concerning village size various items of information are available. In the diary of Ramon Abella in 1811 he mentions that the Cholbones had three rancherias with a population of 900, or 300 per rancheria. That of the Coyboses had 180 and that of the Tauquimenes 200 men and 60 houses. The population of the latter tribe, if we apply the ratio found by Zalvidea at the southern end of the valley, should be 650. This ratio, it will be remembered, is based on Zalvidea's statement that he counted as men all males between the ages seven and forty. If, on the other hand, we assume that Abella referred to all males except small children and further that the sex ratio was unity, the adults would have numbered 400 and, if 15 per cent of the village were children, the total would be approximately 470. However, in the northern end of the valley we have much more solid data with which to work than at the extreme south.

The baptism records of the missions of San Jose and Santa Clara to which reference is made above include for each gentile village a breakdown of men, women, and children. These data have been already discussed in connection with the rancherias on Lake Tulare and it has been shown that, if proper correction is made for the sex ratio, men and women each contributed 41.8 per cent of the population and children 16.4 per cent. It is clear that in the north the Franciscans employed their standard system of calling children all persons under the age of ten years (not seven years) and including as males all men above the same age. Zalvidea's system was used only by himself. Consequently, a village with 200 men would have contained 563 persons in all.

For the village of the Tauquimenes with 60 houses the average would have been 9.38 persons per house. That this number is not excessive is demonstrated by the account of the village of Chuppumne contained also in Duran's diary. This rancheria had 35 houses, some of which were 40 to 50 paces in circumference. Since a pace is roughly a yard the diameter of such a house would be 43 feet, amply sufficient to accommodate 9 persons. Chuppumne would thus have had a population of 315. Duran also mentions a rancheria of the Ochejamnes which had 40 houses, or 360 inhabitants.

Luís Argüello (MS, 1813) describes an expedition under the command of one Soto, whose party was attacked by Indians in the marshes of the delta. Schenck (1926, p. 129) locates the scene as in T5N, R4E, near Walnut Grove and designates the tribe as the Unsumnes or Cosumnes. Now Argüello states that the expedition crept up on the Indians overnight and attacked at dawn. They were surprised to find that their coming had nevertheless been detected and that the Indians had sent away the women and children. The Spaniards were met by a force of warriors, which Soto placed as his best estimate at 1,000 persons. These were drawn from four rancherias in the vicinity. One may always exercise skepticism with reference to these estimates of enemy forces, particularly in this instance, since the Spaniards were roughly handled and suffered several casualties in addition to being forced to withdraw. On the other hand, the invaders consisted of 13 well armed Spaniards and 100 Indian auxiliaries. Nothing like an equal number of natives could have withstood them. Soto's estimate may be cut in half but at least 500 warriors must be allowed, or 125 for each of the four rancherias. Now the fighting population, even in a great emergency, does not coincide with the total male population. If there were 500 warriors, there must have been fully 300 young boys, invalids, and old men who were not present. Hence we must concede a male population of no less than 800 for the four villages. If the percentage values established previously are used, the mean village size was approximately 475.

To the villages just described may be added the one seen by Moraga on the Stanislaus River in 1806, which had 200 inhabitants.

These twelve villages thus yield an average of 362 inhabitants each. Although throughout the territory many rancherias were doubtless small, it is equally probable that some were very large, approaching the magnitude of Chischa and Bubal in the south. Hence, unless in some particular instance there is clear reason to believe otherwise, 300 cannot be regarded as an excessive estimate for the average village of the delta.

In considering in detail the population of the delta (see map [6], area 13), it is convenient to segregate groups according to tribal distinctions rather than strictly according to geographical points. The reason lies primarily in the fact that the early writers and the mission records were relatively explicit with respect to names of villages and groups but were badly confused with respect to localities. In the densely populated but physiographically homogeneous delta region, with its scores of small streams, sloughs, and islands, explorers found it very difficult to establish clear landmarks by which the inhabitants might be oriented. A state of confusion has arisen of a kind to generate many controversies among ethnographers, controversies which are not pertinent in the present connection and which it is desirable to avoid as far as possible. In order to adopt a more or less uniform system with respect to tribal nomenclature and arrangement it is proposed to follow here the practice of Schenck (1926), who has made an exhaustive study of the area.

Bolbones (syn. Cholbones, Chilamne, Chulame).—This large group occupied the sloughs of the lower San Joaquin west of Stockton. Schenck, on his map (1926, p. 133) shows their territory as being bounded by the main stream of the San Joaquin River on the east and by the channel now known as the "Old River" on the west. This delineation of their habitat is supported by the diaries of Abella and Viader. Schenck classifies the subtribes or divisions of the main group as follows: