The Blair House was purchased in 1836 by Francis Preston Blair. Dr. Joseph Lovell is credited for the construction of the House in 1824. The prestige of the House can only be explained by the succession of other dignitaries that used the house after the Blair’s: Thomas Ewing, the first Secretary of the Interior lived in that house as a tenant. Since then a succession of people affiliated to the Blair’s have used that house and in 1852 another residence was constructed nearby. It housed Montgomery Blair, the son of Francis Preston Blair and President Lincoln. The importance of the Blair House was rekindled in 1942 when it was used as the residence for foreign Dignitaries. Also President Truman lived temporarily in Blair House during the reconstruction of the White House still in 1942.