The Aboriginal Population of the San Joaquin Valley, California

by Sherburne Friend Cook

In his account of the expedition of 1817 Duran tells how he arrived at noon of May 14, by boat from San Francisco, at the "remate" of the "estrecho de los Chucanes," at a point 14 leagues northeast of San Francisco and 17 leagues north-northeast of San Jose. The rancheria of this name, he states, is now Christian, at San Francisco and San Jose. The mission books show a total of 105 baptisms at the two establishments.

It is reasonably plain that the Aguastos and the Chupunes occupied more or less the same territory—along the south shore of the eastern end of Carquinez Strait and the western end of Suisun Bay. The diaries and the baptism records both indicate that the original inhabitants were the Aguastos, who were missionized and removed. Their place seems to have been taken by another group of natives known as the Chupunes, who also were gathered into the fold at some period between the visits of Abella and Duran. Subsequent to the 1817 diary of Duran there is no further mention of this tribe. With respect to population we have only the record showing 105 baptisms. Since the conversion seems to have been quite complete, we may set the aboriginal value at no more than 150.

Let us now consider the Ompines. This group is placed by Schenck on the north bank of the Sacramento River at and above the junction of the river and Suisun Bay. Schenck also (p. 137) discusses the possibility that the Ompines and Julpunes composed a single group. In spite of an assumed similarity in names the Spanish accounts are unequivocally explicit to the effect that there were two groups, not one, hence Schenck's hypothesis may be disregarded. With respect to location the later Spanish accounts bear out Schenck's contention that the tribe was situated north of the river.

In his entry for May 14, 1817, Duran says that his expedition stopped at the mouth of the San Joaquin River, whereas another boat (that of Argüello) stopped opposite "en tierra de Ompines." The next day they all went up the Sacramento River to the "remate de las lomas de los Ompines." Meanwhile Argüello, in his entry for May 15, says that they went along the north shore and stopped "donde termina la tierra de los Ompines." This puts the eastern edge of the Ompines at the east side of the Montezuma Hills in T3N, R2E, approximately as shown by Schenck. Altimira describes an unauthorized raid by Fr. Duran on the tribes north of Suisun Bay, among them "... otra rancheria aislada llamada los Ompines" (Altimira, MS, 1823).

A few of the earlier documents, on the other hand, contain statements which raise the possibility that the Ompines were not always confined exclusively to the north shore. In his diary of 1811 Abella describes how, on October 17, his party entered a big bay (Suisun Bay) and, after 5 leagues, following along the south shore, began to find estuaries and numerous islands covered with tules. They continued into the west channel of the San Joaquin and stopped at an island on which large trees were growing. At this point, somewhere near Antioch, there was a "pescadero" of the Ompines. It is evident, therefore, that in 1811 the Ompines had at least temporary fishing spots on the south side of the estuary, in an area usually ascribed to the Julpunes or Tarquines.

The San Jose baptism book shows the conversion of 108 Ompines. Those from San Rafael and Solano do not mention the tribe. The fact that a tribe situated north of Suisun Bay does not appear in the records of either of these missions is noteworthy, since during the 1820's and 1830's the north-bay groups were brought to them in large numbers, and since we know from Altimira's comment on Duran's raid that the Ompines were still in existence in 1823. Furthermore, the Ompines must have constituted more than a single small village, for Argüello and Duran both refer to the "tierra" of the Ompines. The hypothesis is possible, although admittedly there is no real proof, that the Ompines may have originally occupied the sloughs and islands at and above Antioch, that they may have been pushed north at an early date by Spanish intrusion from the south and west, and that they may have been further dispersed, or exterminated without extensive conversion, prior to 1830. If such a theory in any way represents the course of their decline and disappearance, then it also follows that the aboriginal population was considerably greater than the baptism number would lead one to suppose.

To turn now to the Julpunes, there seems to be little difference of opinion regarding their original location. This was as Schenck pictures it: the south shore of the San Joaquin estuary from Antioch to the line between R3E and R4E. The "Informe" of Hermengildo Sal, written in 1796 and previously referred to, specifies the "Tulpunes" as a "nacion" living on the "orilla del estero." Fourteen years later in 1810 Viader went 7 leagues from Pittsburg to the "old river" west of Stockton. He was: "... esta tierra es de los Tulpunes." Duran, May 24, 1817, on his return journey downstream reached the region of the Julpunes at 8:00 A.M. and joined the other boat at 6:00 P.M. of the same day at Carquinez Strait.

Schenck (1926, p. 137) points out that Kotzebue, who was in the area in 1823, implies that the Julpunes were living on the north bank. Merriam (1907, p. 348), says that the Hulpoomne "occupied the east bank of the Sacramento River from a few miles south of the mouth of American river southward ..." Schenck's explanation of the discrepancy appears to the present writer entirely sound: the Julpunes retired across the estuary to the north bank and then upstream nearly to Sacramento. In so doing they may very well have carried the surviving Ompines with them. The San Jose record lists 148 baptisms of Julpunes but the name is absent from the records of San Francisco, Santa Clara, San Rafael, and Solano missions. Along with the Ompines the Julpunes must have escaped the active proselyting effort of San Rafael, and particularly Solano, between 1824 and 1834, by a rapid retirement so far up the river as to elude the parties sent out from the missions. The converts at San Jose must have been captured by the Viader, Duran, Argüello, and similar expeditions before the migration upstream.

The Tarquines are claimed by Schenck to have been "... a single group. It seems to have stretched from east to west entirely across the marsh area between the main channels of the Sacramento and San Joaquin rivers, and then to have extended along the southern shore of Suisun Bay" (pp. 134-136). Schenck's belief in this remarkable distribution is based upon three documentary references (at least he cites no more than these three in his tabulation on p. 135).

The first of the three documents, chronologically, is the first expedition of Viader, in 1810. In his entry for August 17 Viader says that, having spent the preceding night near the present location of Pittsburg, he reconnoitred these lands which "... son de los Tarquines, que lo mas, 6 casi todos son Cristianos de San Francisco." After noting the mouths of the two rivers, he goes on to mention a spot on the estuary "... en donde dicen estaba la rancheria de los Tarquines" (emphasis mine). Let it be emphasized that in 1810 the Tarquines are almost all Christians in San Francisco, and Viader saw there the rancheria which was, or had been, that of the Tarquines. The San Francisco baptism book shows 18 "Talquines" converted in 1801 and 63 more in 1802, making a total of 83. This number could well be the majority, or almost all, the inhabitants of a moderate-sized rancheria. Schenck is therefore technically correct in placing the tribe on the south shore of the eastern end of Suisun Bay.