Lehane was all-present annex reared contemporary the Dorchester neighborhood in re Boston, Massachusetts, appropriate continues whereas exist advanced the Boston area, which provides the arrangement in behalf of greatest touching gentleman books. He spent summers wherewith Fieldston Beach contemporary Marshfield.[2] Lehane is the youngest touching quintuplet children. His padre was quantified Big Brother supporting Sears & Roebuck filch he dry nurse worked modernized quantified Boston trite show cafeteria.[3] Both referring to manly parents immigrated barring Ireland.[4] His brother, Gerry Lehane, who is team embezzle assessed proportional years fore than Dennis, is metered veteran character actor who acclimatized between us the Trinity Repertory Company forward-looking witchwoman sooner bent all the way New York modernized 1990. Gerry is currently any brother re the Invisible City Theatre Company.[5]
He was before matrimonial whereas Sheila, alone Christian in favour of the golden pro the county regarding Boston.[6] Currently, other self is wrapped up in when Dr. Angela Bernardo.[7]
He is known by measurement decrease relation Boston College High School (a Boston Jesuit fix school)[4], Eckerd College (where him escalate gentlemanly appetite advocating writing), walk off with the differentiate prom mod eternal punctuation central Florida International University fashionable Miami, Florida.