The loyalists of America and their times: from 1620 to 1816, Volume 2, Egerton Ryerson (Volume 1):
My 3rd great-granduncle, Isaac B. Howard, was Egerton Ryerson's assistant and was an in-law of Ryerson's in-law.
Dr. John Beatty was the brother-in-law of Isaac Brock Howard, a member of my Howard family. Isaac B. Howard was Dr. Egerton Ryerson's assistant. So Dr. John Beatty's brother-in-law, Isaac B. Howard, was affiliated with another brother-in-law of his, Dr. Egerton Ryerson.