Countrywide Home Loans and Wells Fargo Home Mortgage were the major sources of new mortgage loans securitized through Fannie Mae and Freddie Mac during the first quarter of 2005, according to a new Inside Mortgage Finance analysis of securities pool data from the two government-sponsored enterprises. Countrywide delivered a hefty $20.84 billion of mortgages to Fannie Mae MBS pools in the first three months of the year, accounting for 21.7 percent of Fannie’s total single-family…