Valentines Based Question

[blueterrier]

A young man walks several miles to post anonymous valentines to four different women – the three daughters of his boss, and the best friend of the eldest daughter. The four women all guess the valentines are from him, treat the whole thing as a great joke, and send him a joint valentine back, in the form of a poem. But perhaps one of these women is having to struggle to conceal the true depth of her feelings.

What is the surname of the man who sends the four valentines?

[GlenB]

He probably has the same name as his boss who is his father.