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. The second document is the diary of Abella in 1811. On October 25, in the course of the return trip downstream, some distance below the junction of the channels of the San Joaquin, he found a rancheria of the Tauquimenes, one part of each side of the river, which was 30 to 40 varas wide. This point was apparently at or near the head of Sherman Island. The rancheria had 60 houses. He saw 200 warriors. He then crossed through the sloughs to the Sacramento River and on or opposite Sherman Island saw one rancheria of 14 houses and several of 2 to 3 houses. He says that all they passed this day was "... parte de una isla" (i.e., Sherman Island). Furthermore ... en todo este dia andubimos como unas 12 leguas [overestimate] y podra haver gente, como 200 almas, todavia puede que haiga mas, porque en la primera [rancheria] habraumas 1,000, segun lo grande que por aqui son las casas, tienen un circuito de 28 o 30 varas, con su orcon en medio ...