I write The Alvis Exchange newsletter and have great files on all the Alvises I can find. This is what I found for you:
John, b 1879 AR; s/o James P Julia A Wallis (1880 census); m 1905 Tenia Christemmie Holder Randolph Co AR, MR; 1900 Randolph Co AR, w/mo; 1910, w/wife, dt, uncle cousins; 1920, w/wife and 4 ch; Ch: Nettie, Billy M, Lehman, Euel.
James P, b 1849 Izard Co AR; s/o Meredith Mary Bradford (1850, 60, 70 census); m Apr 8 1874 Julia A Wallis, Randolph Co AR, MR. Mrs J A Alvis m #2 Jul 16 1891, A J McCluskey, Randolph Co AR. Ch: John.
Meredith, b 1802-1815 VA; prob s/o Charles. Harry O Alvis (a meticulous Alvis researcher) wrote that Meredith's possible brothers Zachariah b 1803 VA Thomas S b 1806; m Oct 3 1838 (1) Mary Bradford, Gibson Co TN MR; 1840 census, Gibson Co TN, Marada, 10001/001; Izard Co AR 1850, 35, w/wife, 4 ch; 1860, w/wife, 7 ch; 1870 Randolph Co AR, 68, w/wife, 7 ch, nearby prob bro wife; m May 12 1877 (2) Sally Huff Lawrence Co AR, not ratified; m Jun 27 1877 (3) Fannie Reed, Randolph Co AR, MR, gave age as 50. Ch: Rosaline, John, Frances, James P, Elijah Thomas, Mathilda, Daniel, Harris, Elmira (marriage index shows both Rosaline and Frances marrying); genforum says he married Jane or Mattie Jane Reed and moved to MO.
This is the same Meredith Alvis about whom Mike Landwehr posted a query here on May 16.
Send me SASE (55¢ postage) and I'll send a sample of the newsletter.
12601 N Pennsylvania #163
Oklahoma City OK 73120-9434