Here's a somewhat loose translation. Mineral del Monte is the name of the town which was
presumably originally a mining camp. It is in Estado Hidalgo, around 60 km north of Mexico City. Cauicatlán is my best guess for the name of the other town; there is a place by that name in Hidalgo.
Number 11 (eleven). David Frank Cameron Knowles. In Mineral del Monte, at 9 in the morning of the 6th of January, 1921 (one thousand nine hundred and twenty one) appeared at this office before me, Tarsicio Ortega, Municipal President and Civil Court Judge, Mr. José G. Dodd,
married, of full age, miner, of English origin and a resident of this Mineral who presented a
certificate signed by Doctor J. Balinaceda F. by which it appears that yesterday at 11 a.m. the child David Frank Cameron Knowles, aged 1 month and 20 days, from Cauicatlán, of English nationality, son of Mr. Frank ? Howard Knowles and Mrs. ? Knowles, died at the miner's house in the San Cayetano neighborhood as a consequence of acute enteritis. Witnesses were Mr. Matthew Monks and Mr. Mariano Arista, both of full age and employed, the first from Dublin, Ireland and the second from Cauicatlán, Hidalgo, and both residents of this place. A permit for the burial of the body in the pantheon of the English colony of this municipality was emitted. By which was completed this act which was ratified and signed by Tarsicio Ortega, J.G. Dodd, Matthew Monks, Mariano Arista, Raymundo Frejo.