Question: What is the nationality of the man who, with his brother Stephen, wrote the book The Love Dare?  

Context articles: John Barton Hack
Peter Hill (entrepreneur)
Brother Stephen Russell
The Love Dare
Alexis Phelps House
David Dexter House
Alex Kendrick
Constantine Lekapenos
Stephen Kendrick
Psyche (band)

John Barton Hack (2 July 1805 – 4 October 1884) was an early settler in South Australia; a prominent farmer, businessman and public figure.
 He lost his fortune in the financial crisis of 1840 and despite his best efforts, never regained anything like his former influence and prosperity.
 His son Theodore Hack, younger brother Stephen Hack and nephew Wilton Hack were all figures of some significance in the history of the Colony.
Peter Hill (born 1964 in Melbourne, Australia) is a former champion Australian skateboarder and the co-founder of Globe International, a multinational, youth culture, branded footwear, apparel and skate/surf business with his brother Stephen Hill.
 Peter Hill has also acted as an executive producer on over 30 media projects, including feature films and television specials and a producer on Eric Bana's Love the Beast.
Brother Stephen Russell (born Jim Russell, 25 December 1911, Thomastown, Kilmallock, County Limerick, Ireland – 11 May 1975) was a poet, comedian, Alexian Brother, Good Samaritan and carer of down and outs.
 Brother Russell House in Limerick is named after him in honour of his work with helping Limerick's homeless in the 1970s.
The Love Dare is a non-fiction marriage-related book written by Alex and Stephen Kendrick.
 It is a 40-day Christian devotional designed to strengthen marriages.
 Each daily devotion includes scripture, a statement of principle, the day’s "dare," (such as "Resolve to say nothing negative to your spouse at all") and a journaling area and check box to chart progress.
 It is used in the storyline for the 2008 film, "Fireproof", which is directed by author Alex Kendrick.
 For Valentine's Day, Day 1 and Day 2 of "The Love Dare" were published on the Baptist Press' website, with permission of B & H Publishing Group.
The Alexis Phelps House is a historic home located on the Mississippi River in Oquawka, Illinois, United States.
 The New England style house was built in 1832-1833 by Alexis Phelps, a fur trader and one of the first settlers of the region.
 Phelps, who was born in Palmyra, New York, settled on a piece of land known as Yellow Banks, which his brother Stephen had purchased in 1828.
 Alexis and Stephen Phelps founded Oquawka, which they named for the Native American name for Yellow Banks, in 1836.
 Stephen A. Douglas, who frequently presided over the Henderson County Circuit Court, stayed in the house during his visits to Oquawka.
 The house was also rumored to be a stop on the Underground Railroad.
The David Dexter House is a historic house on Lincoln Heights in northern Claremont, New Hampshire.
 This large, five-by-four bay wood frame 2-1/2 story house was built c. 1790 by David Dexter, who along with his brother Stephen was responsible for significant growth of the textile mills in central Claremont.
 The house was later used as a boarding house for mill workers.
 In the 1970s the house became the focal point for a long-running preservation debate, whose result was that the building was relocated to its present location, minus a later ell and its original central chimney, in 1975, to make way for an urban redevelopment project.
Alex Kendrick (born June 11, 1970) is an American film writer, producer, director and award winning actor.
Constantine Lekapenos or Lecapenus (Greek: Κωνσταντίνος Λακαπηνός ) was the third son of the Byzantine emperor Romanos I Lekapenos (r. 920–944), and co-emperor from 924 to 945.
 With his elder brother Stephen, he deposed Romanos I in December 944, but was overthrown and exiled by the legitimate emperor Constantine VII (r. 913–959) a few weeks later.
 Constantine was exiled to the island of Samothrace, where he was killed while attempting to escape sometime between 946 and 948.
Stephen Kendrick is a Christian American film writer and producer, co-writer of the book "The Love Dare" with brother Alex Kendrick, and senior associate pastor at Sherwood Baptist Church in Albany, Georgia.
Psyche are a Canadian dark synthpop band, now based in Germany.
 They are centered on singer Darrin Huss, who has been the only constant member, with various line-ups including his brother Stephen Huss, later followed by David Kristian, Per-Anders Kurenbach, and Remi Szyszka, all recording albums with Darrin under the name Psyche.