How old was Robert Frost when he made the momentous decision in 1912?

in 1912 frost sailed with his family to great britian.living first in Glasgow before settling in beacons field outside London's the momentous decision was to leave us (a year after leaving his diary farm) and settle in great britian.which is where he received his first real acclaim as a poet .it was hi first step in pursuing , writing poetry on his vocation.